Invisible decreases in the back loop

I've seen a couple of crochet tutorials where the designer makes invisible decreases in the back loop only, which seems really difficult for me. She actually does it easily, twisting the hook in a strange way, which I don't manage to master myself.

Soooo, I've come up with a technique that allows you to do an invisible decrease in the back loop without having to make difficult movements with the hook. Well, I'm not sure if I've invented this myself. All I can say is that I have never seen before anyone doing this.

It goes like this:
0. You have a loop on your hook, which is the one remaining from the last stitch work. Then you would usually insert your hook through the back loop of the next stitch and then through the back loop of the next stitch. Instead, insert your hook through the second one (skip the next stitch).
1. Pull up a loop (2 loops on hook)
2. Get your hook out of one hook (1 loop)
3. Insert hook through the back loop of the stitch you skipped.
4. Insert hook through the "hanging" loop from the 2nd stitch (I mean, the loop you left behind when getting your hook out of it).
5. Pull through (2 loops)
6. Close stich as normal. That's your decrease.

Has someone else heard of this technique before or even tried?
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